I have AWmap running on an Ipaq with Wxworx and it's a good system.
Setup is a little more kludgy than the Garmin 396, with separate units
that have to talk to each other. If you own, you can just install it
and pretty much forget it, but it would be a pain with a rental
aircraft.

Control Vision has much improved the stability of the system.

I sometimes see used ones on Ebay as people switch to Garmin.